CN1296718A - Method and arrangement for dtermining the presence of mobile station in demtermined area - Google Patents
Method and arrangement for dtermining the presence of mobile station in demtermined area Download PDFInfo
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- CN1296718A CN1296718A CN99804936A CN99804936A CN1296718A CN 1296718 A CN1296718 A CN 1296718A CN 99804936 A CN99804936 A CN 99804936A CN 99804936 A CN99804936 A CN 99804936A CN 1296718 A CN1296718 A CN 1296718A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 102100027377 HBS1-like protein Human genes 0.000 claims abstract description 75
- 101001009070 Homo sapiens HBS1-like protein Proteins 0.000 claims abstract description 75
- 238000004891 communication Methods 0.000 claims abstract description 61
- 230000001413 cellular effect Effects 0.000 claims description 40
- 101150117600 msc1 gene Proteins 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 14
- 101100510439 Oryza sativa subsp. japonica KSL8 gene Proteins 0.000 claims description 11
- -1 BS1 Proteins 0.000 claims 2
- 101150052235 KSL7 gene Proteins 0.000 abstract 2
- 102000012677 DET1 Human genes 0.000 description 15
- 101150113651 DET1 gene Proteins 0.000 description 15
- 238000010586 diagram Methods 0.000 description 7
- 101000786631 Homo sapiens Protein SYS1 homolog Proteins 0.000 description 6
- 102100025575 Protein SYS1 homolog Human genes 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 101100078001 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) MSC2 gene Proteins 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000011664 signaling Effects 0.000 description 4
- 238000012795 verification Methods 0.000 description 3
- 101100018857 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) IMH1 gene Proteins 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
- H04W36/142—Reselecting a network or an air interface over the same radio air interface technology
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/16—WPBX [Wireless Private Branch Exchange]
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- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
The present invention is related to a method and arrangement in a radio communication system (SYS1) for determining the presence of a mobile station (MS1) in a determined area (101). A first radio channel (DTC1) is allocated for communication of control information and user data information between the mobile station (MS1) and a first base station (BS1). The mobile station (MS1) transmits identity information (ID1) repeatedly on the first radio channel (DTC1). A detecting unit (HBS1) receives at least one occurrence of the transmitted identity (ID1) information. The mobile station (MS1) is registered as present in the vicinity of the detecting unit (HBS1) upon receipt of said at least one occurrence of the identity information (ID1).
Description
Technical field
The present invention relates to a kind of method and scheme in the radio communications system that travelling carriage works therein.More particularly, the present invention relates to a kind of method and scheme, be used for determining that travelling carriage is whether in the appointed area.
Correlation technique
The problem that the travelling carriage of working in radio communications system is often run into is, how to judge that a certain travelling carriage is whether in the appointed area.
A kind of situation example that this problem takes place is, a base station from home, just can be with the private base station of public telephone network connection, be installed in the family of public cellular network users, and this user utilizes his or her travelling carriage, more wish by base station from home communication at home and in the area of radio coverage of family expenses base station, rather than pass through cellular network communication.
GB 2282735 has introduced a kind of communication system, and user wherein carries a mobile phone, and cellular network communication is perhaps passed through in this mobile phone or the base station from home communication by connecting with telephone network in away from base station from home.Except in its honeycomb mode for the facility of calling out connection, identification and business purpose emission digital and analog signaling, mobile phone is also launched the low-power narrow band signal, this signal instruction user's identity.When the user when the base station from home, base station from home is received these identification signals, these signals touch a switch, make it enter second kind of mode of operation, in this pattern, the signal of giving the user of coming in is by telephone network and base station from home transmission.According to GB 2282735,, do the complexity and the cost that have increased mobile phone like this except emission need be equipped with at least two transmitters with the mobile phone of launching the low-power identification signal the relevant signal of calling.
In addition, GB 2282735 discloses after changing to second kind of mode of operation, and the signal of coming in is how by telephone network and base station from home.Relate to how the calling of setting up in the Cellular Networks is switched to base station from home without any disclosed content.
United States Patent (USP) 5260988 has been introduced the wireless portable wireless phone of a kind of dual-mode cellular, and it can work in cordless telephone system, can work in Cellular Networks again.In the cordless system coverage with in interior, first-selected this system of this radio telephone.
In Cellular Networks, when this radio telephone worked in idle pulley, just power supply was being opened but is not being set up when calling out, and this radio telephone monitors first control channel that belongs to this base station of Cellular Networks.This radio telephone stops to monitor first control channel a period of time temporarily.In period, this radio telephone scans the radio signal of cordless system at this section.If found cordless system, this radio telephone just switches to this cordless system, otherwise just recovers to continue to monitor first control channel.
US 5260988 has also discussed the calling how will set up and has switched to cordless system from Cellular Networks.Yet US 5260988 both openly be not what triggers this radio telephone and attempts and switch in the cordless system, does not introduce this radio telephone yet and how can keep calling in the radio signal of scanning cordless system.
The invention summary
Total problem that the present invention will solve is how to detect a certain travelling carriage whether in the appointed area.
This problem solves by a kind of method basically, and in this method, travelling carriage is in the information of distributing to emission identification travelling carriage identity on the radio channel that is used to communicate by letter between travelling carriage and first base station.When detecting unit is received the identifying information of emission, just this mobile station login is become in this given area.This solution is included in and implements the necessary device of this method in the radio communications system.
More particularly, this problem solves with the following methods.Distribute first radio channel, be used for transmitting control information and user data information between travelling carriage and first base station.Travelling carriage is launched identifying information repeatedly on first radio channel.Detecting unit at least once receives the identifying information of emission.When receiving this at least identifying information, be mobile station login just, think that it is in the near zone of detecting unit.
Whether general purpose of the present invention provides a kind of method and scheme, be used to make detecting unit to detect to specify travelling carriage near this unit.
The present invention's purpose more specifically provides detection method and the scheme whether a kind of like this travelling carriage exists, and it does not require that travelling carriage has more than one transmitter.
Further object of the present invention provides a kind of changing method and scheme, wherein travelling carriage switch to from first base station second base station be, the detection method of utilizing described travelling carriage whether to exist detects that travelling carriage carries out in really in second base station overlay area.
An advantage of the invention is a kind of detection method and scheme that it provides travelling carriage whether to exist, it does not require that travelling carriage has more than one transmitter.
Another advantage is that the present invention allows optionally changing method and scheme, the travelling carriage that wherein will select with first base station communication in first radio communication net, switching to the decision-making that is different from second base station in first radio communication net, is transparent for travelling carriage and first radio communication net.
Introduce the present invention in further detail below with reference to exemplary embodiment and accompanying drawing.
The accompanying drawing summary
Fig. 1 has drawn and has comprised first radio communications system of a base station from home.
Fig. 2 A is that whether travelling carriage exists the flow chart that detects in one embodiment of the invention.
Fig. 2 B comprises that whether travelling carriage shown in Fig. 2 A exists the flow chart of the changing method of detection method.
Fig. 3 is the block diagram that the structure of the identifying information of launching is described.
Fig. 4 is the block diagram of an embodiment of travelling carriage among the present invention.
Fig. 5 is a block diagram of base station from home.
Fig. 6 has drawn and has comprised second radio communications system of a wireless office chamber system.
Fig. 7 comprises that whether family expenses exist the 3rd radio communications system of detector.
Fig. 8 is the 4th radio communications system that comprises a Cellular Networks.
Fig. 9 is the block diagram of explanation digital service channel architecture.
Embodiment describes in detail
The part that Fig. 1 has drawn radio communications system in first exemplary of the present invention.
The a little system SYS1 of radio communication comprise a public cellular net PLMN1 and a public telephone network PSTN1.Cellular Networks PLMN1 comprises a mobile services switching centre MSC1, and first base station BS 1 links to each other with it.
Radio communications system SYS1 also comprises a base station from home HBS1.In this embodiment example, base station from home HBS1 is installed in Cellular Networks user's family.Base station from home HBS1 connects with the local switch LE1 among the public telephone network PSTN1.Telephone network PSTN1 and Cellular Networks PLMN1 are connected to each other, and allow the telephone subscriber in corresponding network to communicate, and for example make a phone call.Radio communications system SYS1 also comprises a mobile station MS 1, and it makes the Cellular Networks user to communicate by for example setting up call and accepting call.
Base station from home HBS1 also can be called personal base station with it, provides radio to cover near the specific region 101 phone user's family.Base station from home HBS1 and first base station BS 1 are all supported same radio interface among Fig. 1, and this can simplify the design of mobile station MS 1.In this exemplary, adopted the radio interface that meets TIA/EIA IS-136 standard.
When the phone user used mobile station MS 1 in the area of coverage 101 of family expenses base station HBS1, communication was preferably handled by base station from home HBS1 cable telephone network PSTN1, rather than by Cellular Networks PLMN1.Like this, radio communications system SYS1 must be able to detect mobile station MS 1 whether in the area of coverage 101 of family expenses base station HBS1.What the present invention is directed to is exactly this existence whether detection problem.
Fig. 2 A is a flow chart, its explanation be a kind of method of the present invention, when be used to detect mobile station MS 1 nearby, just in the area of radio coverage 101 of family expenses base station HBS1.
In the step 201 of Fig. 2 A li, distribute first digit Traffic Channel (DTC), be exclusively used in mobile station MS 1 with the communication between first base station BS 1.When carrying out channel allocation, mobile station MS 1, first base station BS 1 and mobile services switching centre MSC1 interact with a kind of mode that everybody knows.Second party is sent calling, mobile station MS 1 receives, and mobile station MS 1 sends under the situation of calling, second party reception, the meeting allocated channel, and this MS1 is in the lining, zone (sub-district) of first base station BS 1 service.When channel allocation also can occur in the calling that switching set up.This digital service channel DTC1 is a two-way channel.Make progress at downlink side, just from first base station BS 1 on the direction of mobile station MS 1, corresponding channel is called forward digital service channel (FDTC), on uplink direction, just on the direction from mobile station MS 1 to first base station BS 1, corresponding channel is called reverse digital service channel (RDTC).
Digital service channel DTC1 is used to transmit user data information, for example voice or fax, and control information, just signaling information.
The digital service channel comprises a part that is called slow associated control channel (SACCH) SACCH1.Slow associated control channel SACCH1 is used for transmitting channel quality information (CQM) at uplink direction, and reporting of mobile station MS1 is to the measurement result of the digital service channel DTC1 that distributes, and to the measurement result of other base station signal in the Cellular Networks PLMN1.
Fig. 9 has illustrated the structure of the digital service channel that meets TIA/EIA IS-136 standard.A tdma frame 901 comprises 6 time slots 902, and wherein two time slots are assigned to each digital service channel.In the time slot on uplink direction, emission comprises a pulse train 903 of many fields.Pulse train 903 comprises three data fields 904, synchronization field 905, a slow associated control channel field 906 and a coded digital verification colour coding field 907.These data fields 904 are used to transmit user data information, and slow associated control channel field 906 then is used to transmit slow associated control channel information.When transmitting each slow associated control channel information, use many pulse trains 903.
In step 203, base station from home HBS1 receives at least identification message of mobile station MS 1 emission.In the base station from home HBS1 radio bands that oppositely the digital service channel uses in Cellular Networks PLMN1, scanning belongs to the radio signal of the first digit Traffic Channel DTC1 of distribution.When base station from home HBS1 detects reverse digital service channel at every turn, all to monitor this channel, receive at least one identification message and decoding correctly up to it, perhaps it after testing the time span of this channel be enough to infer and do not launch any identification message on this channel.When receiving identification message, base station from home HBS1 follows the identifying information of the identity that is used to illustrate the mobile station MS 1 that is attached to this base station from home HBS1 that stored in the past to compare the content of message.If the identifying information of receiving does not conform to the identifying information that stores, base station from home HBS1 just continues the first digit Traffic Channel DTC1 that scanning distributes.
If the identifying information of receiving meets the identifying information of storage, base station from home HBS1 thinks that just in step 204 li registration mobile station MS 1 is near the HBS1 of family expenses base station.
Fig. 3 is a block diagram, and the structure of the identification message of emission is described.The same with other TIA/EIA IS-136 message of launching in the slow associated control channel, identification message 300 comprises one 2 bit agreement authentication field 301 and one 8 bit message type field 302.Identification message 300 also comprises an identification field 303.Identification field 303 shown in Figure 3 has 30 bits.Base station from home HBS1 produces the identification code at random of one 30 bit, is stored in base station from home HBS1 and the mobile station MS 1.Technical staff in this area will appreciate that, selecting to be used for identifying information of the present invention has several other modes.Other example includes, but not limited to travelling carriage identifier (MIN), IMSI International Mobile Subscriber Identity (IMSI) or International Mobile Station Equipment Identification (IMEI).
In the monitoring method whether travelling carriage of just having discussed exists, the function of base station from home HBS1 is equivalent to the detector whether a travelling carriage exists.Can think that perhaps base station from home HBS1 comprises that whether such travelling carriage exists detector.
The method that flowchart text among Fig. 2 B switches according to the present invention in radio communications system SYS1 shown in Figure 1.When mobile station MS 1 was positioned at the area of radio coverage 101 of base station from home HBS1, mobile station MS 1 switched to base station from home HBS1 from first base station BS 1 of Cellular Networks PLMN1.
In this changing method, whether detect the existence of mobile station MS 1 in the area of radio coverage 101 of family expenses base station HBS1 according to the method the present invention who introduces above, that is to say that changing method starts from the method step 201～204 shown in Fig. 2 A.
In step 204 li, the identifying information of receiving is confirmed to be with the identifying information that is stored among the base station from home HBS1 identical, and this means that also mobile station MS 1 is confirmed as such travelling carriage, when it is positioned at the scope of base station from home HBS1, preferably should be with base station from home HBS1 communication.In this exemplary embodiment, have only a mobile station MS 1 to be attached to base station from home HBS1, but in other embodiment, can there be several travelling carriages to be attached to this base station from home, constitute a travelling carriage group, in the time of in the scope of family expenses base station, they should communicate by base station from home.
In step 205 li, mobile station MS 1 switches to second digit Traffic Channel DTC2 from first digit Traffic Channel DTC1, transmitting control information and user data information between family expenses base station HBS1 and mobile station MS 1.
Switch and carry out in such a way.Base station from home HBS1 sets up modem dialup by telephone network PSTN1 with the base station from home server in the mobile services switching centre MSC1 and connects.Base station from home is used as an interface, transmission information between family expenses base station HBS1 and mobile services switching centre MSC1.In described modem dialup connects, base station from home HBS1 sends a request and switches to second digit Traffic Channel DTC2 to mobile services switching centre MSC1 or on a radio frequency, in the past with this radio frequency assignment for being used for base station from home HBS1.The distribution radio frequency can be for example according to carrying out that the interim patent 5428.668 of the U.S. is introduced like that to base station from home HBS1.Mobile services switching centre MSC1 makes this request and replying, and it makes base station from home HBS1 begin to transmit on second digit Traffic Channel DTC2.Mobile services switching centre MSC1 allows first base station BS 1 emission switching command give mobile station MS 1, allow mobile station MS 1 be tuned on the second digit Traffic Channel DTC2.Mobile station MS 1 be tuned on the second digit Traffic Channel DTC2, and on this Traffic Channel DTC2, continue to transmit and receive user data information and control information.When family expenses base station HBS1 detected mobile station MS 1 on second digit Traffic Channel DTC2, it had just notified this handover success of mobile services switching centre MSC1.Mobile services switching centre MSC1 will merge being connected of base station from home HBS1 with following from the connection of second party, and the dialogue that continues between Cellular Networks user and the second party is undertaken by the later connection of this merging.Mobile services switching centre instructs first base station BS 1 to discharge first digit Traffic Channel (DTC1).
Mobile services switching centre MSC1 can illustrate in the handoff request of answering base station from home HBS1 that second digit Traffic Channel DTC2 should not use the radio frequency of base station from home HBS1 suggestion, but should use another radio frequency.
When carrying out above-mentioned switching, base station from home HBS1, mobile services switching centre MSC1, first base station BS 1 and mobile station MS 1 interact, and can be regarded as together mobile station MS 1 is switched to the device that second digit Traffic Channel DTC2 gets on.
What Fig. 4 illustrated is the theory diagram of mobile station MS 1.Only the square frame that just needs when working in the analog service channel is not included in Fig. 4.
Mobile station MS 1 comprises a microphone 401 and an earphone 402, links to each other with speech processor 403.Speech processor 403 carries out modulus and digital-to-analogue conversion and speech coding and decoding.Speech processor 403 links to each other with channel coding-decoder 404.Channel coding-decoder 404 carries out chnnel coding and channel decoding and interleaving and de-interleaving.The transceiver 405 that channel coding-decoder 404 attendants of a stage actor draw together a radio transmitter and a radio receiver links to each other.Transceiver 405 links to each other with one pair of antenna 406.Therefore total control that processor controls 407 is responsible for mobile station MS 1 link to each other with transceiver 405, and control them with speech processor 403, channel coding-decoder 404.Memory cell 408 stored program instructions are for processor controls 407 operation, and the data of using when carrying out described program command.As shown in Figure 1, when mobile station MS 1 just on first digit Traffic Channel DTC1 during with 1 communication of first base station BS, processor controls 407 is launched on slow associated control channel SACCH1 for the channel coding-decoder stream that gives information.In this message flow, processor controls 407 is inserted identifying information ID1 according to form shown in Figure 3.The travelling carriage identification code is stored in 408 li of memory cell, and base station from home HBS1 upgrades when giving mobile station MS 1 charging at every turn.
Processor controls 407, channel coding-decoder 404 and transceiver 405 can be regarded on the first digit Traffic Channel DTC1 that distributes as the identification message ID1 of emission repeatedly together, and the identification message of the identity of mobile station MS 1 just is described, emitter.
Except the said apparatus of emission identification message, mobile station MS 1 is similar with other travelling carriage of following TIA/EIA IS-136 to conform to that the technical staff in this area knows.
Fig. 5 has provided the theory diagram of base station from home HBS1.
Base station from home HBS1 comprises one pair of antenna 501, comprises that a transceiver 502 of a radio receiver and a radio transmitter links to each other with it.Channel coding-decoder 503 links to each other with transceiver 502, links to each other with speech processor 504 again then.In mobile station MS 1 shown in Figure 4, channel coding-decoder 503 and speech processor 504 finished similar function with channel coding-decoder 404 and speech processor 403 are the same.
The PSTN interface 505 that speech processor 504 attendants of a stage actor draw together a modulator-demodulator 506 links to each other.In Cellular Networks PLMN1, PSTN interface 505 is used for base station from home HBS1 is linked to each other with the telephone network PSTN1 of Fig. 1, and provides and allow base station from home HBS1 with telephone network PSTN1 and the interactional function of mobile services switching centre MSC1.
When the mobile station MS among Fig. 11 linked to each other with electric connector 509, battery charger 509 was mobile station MS 1 charging.
The details of the base station from home HBS1 others of introducing so far can find in No. the 5428668th, United States Patent (USP).In this patent description by 2～3 more specifically having introduced described base station from home with reference to the accompanying drawings.In specification of the present invention, no longer introduce these common aspect.
When the mobile station MS 1 among Fig. 1 connected with electric connector 510 at every turn, processor controls 508 all produced 30 new bits identification code at random, and by electric connector 510 this identification code is sent to mobile station MS 1.These 30 new bits identification code at random are stored in mobile station MS 1 and the memory 508, the identification code at random that stores before replacing.
Except those unit shown in Figure 4 and discussed above, base station from home HBS1 also comprises a panoramic receiver 511, links to each other with channel decoder 512 with antenna 501.Panoramic receiver 511 all follows processor controls 507 to link to each other with channel decoder 512, and controlled by it.
During the step 203 of method shown in execution graph 2A and the 2B, processor controls 507 is determined a class frequency, and the Traffic Channel DTC1 that distributes among Fig. 1 may use these frequency emissioning signals.This class frequency for example can comprise, may be used for all frequencies of the reverse digital service channel of radio communications system SYS1.Then, processor controls 501 allow panoramic receiver 511 in turn be tuned to each frequencies of these frequencies get on.Panoramic receiver 511 is measured the intensity of the signal of receiving.If this signal strength signal intensity is greater than defined threshold, processor controls 507 just allows the output of 512 pairs of panoramic receivers 511 of channel decoder decipher and deinterleave.Processor controls 507 is analyzed the output of channel decoder 512.Do not have the reverse data traffic channel if processor controls 507 is assert in the signal of signal strength signal intensities greater than defined threshold, processor controls 507 just allow panoramic receiver 511 be tuned to next frequency in the described group of frequencies.If found reverse digital service channel, processor controls 507 just continues the output of monitoring channel decoder 512, think up to it and to have received identification message, monitor that perhaps the time span of current reverse digital service channel is enough to confirm on this channel without any identification message.If do not find identification message, processor controls 507 just allow panoramic receiver 511 be tuned to next frequency in the described group of frequencies get on.
If found an identification message, processor controls 507 just compared the content of the identification message received with the identification codes at random that were stored in the past in the unit 508.
If the identification code of receiving is with the identification code difference that stores, processor controls 507 just allow panoramic receiver 511 be tuned to next frequency in the described group of frequencies get on.
If the identification code of receiving is with the identification code unanimity that stores, processor controls 507 just thinks that the mobile station MS 1 that is attached to base station from home HBS1 is in the area of radio coverage 101 of family expenses base station HBS1.
When processor controls 507 detects mobile station MS 1 in the area of radio coverage 101 of family expenses base station HBS1 the time, base station from home HBS1 begins to switch mobile station MS 1, is introduced when as the front step 205 shown in Fig. 2 B being discussed.In handoff procedure, processor controls 507 is followed mobile services switching centre MSC1 exchange signalling information by modulator-demodulator 506.
Not to link to each other with panoramic receiver 511, but can carry out channel decoding and deinterleave with the output of 503 pairs of panoramic receivers 511 of channel coding-decoder with an independent channel decoder 512.
Processor controls 507, panoramic receiver 511 and channel decoder 512 can be regarded as the receiving system of the identifying information of receiving mobile MS1 emission together.
Processor controls 507 can be seen as when receiving the identifying information of mobile station MS 1 emission, and mobile station MS 1 is registered near the HBS1 of family expenses base station register device.Processor controls 507 can also regard to judge whether mobile station MS 1 is attached to base station from home as, thus the device that preferably should communicate by base station from home HBS1 rather than first base station BS 1.
Except above-mentioned exemplary of the present invention, the present invention also has other several embodiments.
Not transmitting mobile stations identifying information repeatedly in a slow associated control channel, but go up this information of emission at a Fast Associated Control Channel (FACCH).
Technical staff in this area can understand that base station from home can connect with the public cable network of other type beyond the public telephone network shown in Figure 1.The a kind of of this optional network specific digit is Integrated Service Digital Network.The network that base station from home connects both can use connection-oriented message transmission mode, for example connected or the ATM virtual channel with circuit switching, can use no link information transmission mode again, for example, and with User Datagram Protoco (UDP) (UDP).Switch to the base station from home except being used for triggering, whether travelling carriage exists detection method that several other may use are arranged among the present invention.
Another application is that the detection method whether this travelling carriage exists is used to trigger the travelling carriage that is attached to a wireless office system, switches to this wireless office system from the public cellular net.
The radio communications system SYS4 that illustrates in Fig. 6 comprises Cellular Networks PLMN1, mobile station MS 3 and the wireless office system WOS1 among Fig. 1, and this wireless office system comprises private automatic branch exchange (PABX) PABX1 who has connected many base station OBS1～OBS4.PABX PABX1 links to each other with mobile services switching centre MSC1 by main line 601.
In this exemplary of the present invention, be used for and be attached to the travelling carriage of wireless office system WOS1 with the similar a kind of changing method of changing method shown in Fig. 2 B, switch to wireless office system WOS1 from Cellular Networks PLMN1, do like this as long as these WOS1 one enter when the scope of any one is interior among the base station OBS1～OBS4 that belongs to this wireless office system.In Fig. 6, initial with first base station BS 1 communication among the Cellular Networks PLMN1, and at the mobile station MS 3 of the slow associated control channel part SACCH4 of first digit Traffic Channel DTC4 emission identification message, be switched to second digit Traffic Channel DTC5, with second the travelling carriage OBS1 communication that belongs to this wireless office system WOS1.In this exemplary of the present invention, manage the PABX PABX1 of the primary copy of attached travelling carriage inventory, an inventory of the identification code of the travelling carriage that is attached to wireless office system WOS1 is provided for each the base station OBS1～OBS4 that belongs to wireless office system WOS1.OBS1 scanning in base station is sought and is followed Cellular Networks PLMN1 base station communication, is attached to the travelling carriage of cordless system WOS1.When utilizing existence of the present invention whether detection method finding an attached travelling carriage in the area of coverage of one of base station OBS1～OBS4, PABX1 is just told PABX with this fact in described base station.PABX PABX1 sends a handoff request to mobile services switching centre MSC1, and switches according to the similar manner of introducing previously.But be noted that the signaling exchange is to be finished by the main line 601 that is connected PABX PABX1 and mobile services switching centre MSC1 with continuous user data information communication, rather than finish by dial-up connection.
The function of mobile station MS 3 is equivalent to mobile station MS shown in Figure 41 basically.Yet the mobile station MS 3 in this example scenario all will receive the identification code at random of 30 bits when it is at every turn with wireless office system WOS1 registration.When detecting mobile station MS 3 and having entered the service area of wireless office system WOS1, PABX PABX1 produces this identification code at random, base station by detecting mobile station MS 3 sends this new identification code to mobile station MS 3 with identification message (see figure 3) first, upgrade the primary copy of attached travelling carriage inventory with this new identification code at random, simultaneously this new identification code is sent to its attached travelling carriage OBS1～OBS4.
Another application is whether to have detection method with this travelling carriage, examines a certain travelling carriage whether in handover candidate cells, rather than is used to switch.A kind of like this application illustrates with Fig. 7.Fig. 7 has illustrated a kind of radio communications system SYS2, and it comprises a Cellular Networks PLMN2 and a mobile station MS 2.This Cellular Networks PLMN2 comprises a mobile services switching centre MSC2 who has connected first base station BS 1 and second base station BS 2 among the figure.Distribute first digit Traffic Channel DTC3, be exclusively used in the communication between mobile station MS 2 and first base station BS 1.Travelling carriage BS2 launches identification message ID2 repeatedly on the slow associated control channel part SACCH2 of first digit Traffic Channel DTC3, comprising the information of explanation mobile station MS 2 identity.In this optional application of the present invention, the selected Temporary Mobile Station Identity (TMSI) of doing of the identifying information of emission is dynamically distributed to mobile station MS 2 by this Cellular Networks PLMN2.Mobile station MS 2 pairs of first digit Traffic Channels DTC3 and measure from the radio signal of other base station comprises the signal of second base station BS 2, and gives first base station BS 1 with these measurement report.When mobile station MS 2 during near second base station BS 2, the signal strength signal intensity of first digit Traffic Channel DTC3 descends, and the signal strength signal intensity of second base station BS 2 then strengthens.The result of first base station BS 1 assessment travelling carriage report, and its own measurement result on first digit Traffic Channel DTC3.When satisfying transfer criterion, first base station BS 1 sends first that handoff request message illustrates that to mobile services switching centre MSC2 second base station BS 2 is as main switching target.Mobile services switching centre MSC2 sends first, and verification request message allows second base station BS 2 examine the signal that second base station BS 2 can be received mobile station MS 2 emissions on the road in up company of first digit Traffic Channel to second base station BS 2.
In prior art, as you know, this examine be by be tuned to the uplink portion of first digit Traffic Channel DTC3, just be tuned to mobile station MS 2 frequency and the time slot that transmit when on first digit Traffic Channel DTC3, communicating by letter get on, target BS measure and assessment decoding after numeral examine colour coding, the signal strength signal intensity of receiving and the pulse train quality received finishes.
2 li of base station BSs shown in Figure 7, whether these prior art tests exist detection method to replenish by travelling carriage of the present invention.The request of examining that mobile services switching centre MSC2 sends comprises the information of explanation first digit Traffic Channel DTC3, just frequency and gap information, and the Temporary Mobile Station Identity of distributing to mobile station MS 2.Base station BS 2 according to the information that provides of explanation first digit Traffic Channel DTC3 be tuned to the radio receiver of second base station BS 2 get on, attempt the identification message of receiving mobile MS2 emission.If having at least, base station BS 2 once successfully received the identification message ID2 that comprises with the identical Temporary Mobile Station Identity of distributing to mobile station MS 2, second base station BS 2 just thinks that the radio signal of receiving is mobile station MS 2 emissions, and return first verification result message and give mobile services switching centre, illustrate to detect mobile station MS 2 near second base station BS 2.
Another application of the invention illustrates with Fig. 8.Radio communications system SYS3 shown in Figure 8 comprises public cellular net PLMN1, public telephone network PSTN1 and mobile station MS 1 shown in Figure 1.Among the radio communications system SYS3 in Fig. 8, whether the base station from home HBS1 among Fig. 1 is existed detector DET1 to substitute by family expenses.The purpose of doing like this is when the Cellular Networks user communicates by letter at home with his mobile station MS 1, and communication is still handled by Cellular Networks PLMN1, but the Cellular Networks user that is to say that with discount taken the duty time charge is lower.
Mobile station MS 1 is positioned at family expenses and whether exists detector DET1 neighbouring with detecting with the similar method of method shown in Fig. 2 A, and wherein whether the family expenses among Fig. 8 exist detector DET1 to replace the base station from home HBS1 among Fig. 1.When whether family expenses exist detector DET1 that mobile station MS 1 is registered to be positioned at family expenses whether to exist near the detector DET1, just in Fig. 8 in the broken circle 801 time, whether family expenses exist detector DET1 to detect when mobile station MS 1 exists just to note the time, that is to say that it receives the moment of the identifying information ID1 that mobile station MS 1 is launched for the first time on first digit Traffic Channel DTC1.Whether family expenses exist the identifying information ID1 on the detector DET1 continuation supervision first digit Traffic Channel DTC1, think that up to it first digit Traffic Channel DTC1 discharges, perhaps mobile station MS 1 leaves near whether family expenses exist detector DET1, that is to say that mobile station MS 1 has moved to beyond the zone 801.The moment whether family expenses exist detector MS1 record to receive identifying information ID1 for the last time.Whether family expenses exist detector DET1 to begin to set up modem dialup by telephone network PSTN1 with mobile services switching centre MSC1 and connect, send first message to mobile services switching centre MSC1, notify its to receive the moment of identifying information ID1 for the first time and for the last time.Mobile services switching centre MSC1 gets up this information storage.
When chargeing for the Cellular Networks user, the expense of duty time is these some information discounts of communicating by letter at home when according to the Cellular Networks user who stores.
Whether family expenses exist detector DET1 to comprise a subclass of square frame shown in Figure 5, and just square frame 501,505～512, and what whether when producing 30 bit recognition sign indicating numbers and detecting mobile station MS 1 and exist face was introduced in front of its function is the same.When detecting mobile station MS 1 and just communicating by letter near whether family expenses exist detector DET1, whether family expenses exist detector DET1 just will receive for the first time and for the last time on first digit Traffic Channel DTC1 that the moment of identification message ID1 note.Whether family expenses exist detector DET1 to set up modem dialup with mobile services switching centre MSC1 to connect then, will be for the first time and moment of receiving identifying information ID1 for the last time, and Cellular Networks user's number of users sends in the past.
Not when whether each family expenses exist detector DET1 detection place mobile station MS 1 to communicate by letter in zone 801, all setting up modem dialup connects, send first message to mobile services switching centre MSC1, but can allow family expenses whether exist detector DET1 that the many times communication informations of zone in 801 are stored, send then these information of comprising storage separately first message to mobile services switching centre MSC1.Message can be in for example transmission every night first separately for this.
For the technical staff in this area, except by the telephone network shown in Figure 8, whether family expenses exist detector to have several other possible modes to follow mobile services switching centre to communicate.Whether family expenses exist the certainly cable network by another kind of type of detector, and for example Integrated Service Digital Network connects and communicates by letter.Whether family expenses exist detector can also use radio communication, and for example mobitex or Cellular Digital Packet Data (CDPD) are followed mobile services switching centre communication.
Whether travelling carriage of the present invention exists detection method certainly to replenish with other mobile location method, for example the time of advent poor so that determine the position of travelling carriage more accurately.
The present invention is not limited to be applied in the radio communications system that meets TIA/EIA IS-136 certainly, but can also be with other air interface specification communication, for example global system for mobile communications (GSM), personal digital cellular (PDC) or TIA/EIA IS-95.
Claims (14)
1. there is detection method in a kind of travelling carriage in the radio communications system (SYS1), and this system comprises first base station (BS1) and a travelling carriage (MS1), and this method may further comprise the steps:
A) distribute (201) first radio channel (DTC1), be used for transmitting control information (906) and user data information (904) between travelling carriage (MS1) and first base station (BS1);
B) launch the information (ID1) that (202) illustrate travelling carriage (MS1) identity repeatedly in the part (SACCH1) of first radio channel (DTC1) that is used for emission control information (906);
C) receive the identifying information (ID1) that at least once launch (203);
D) when receiving at least identifying information (ID1) of emission, travelling carriage (MS1) registration (204) is become near appointed area (101).
2. the method for claim 1 is characterized in that illustrating that the described information (ID1) of travelling carriage identity is to launch in the slow associated control channel part (SACCH1) of described first radio channel (DTC1).
3. claim 1 or 2 method is characterized in that the reception (203) of step c) may further comprise the steps:
E) at least one radio bands subclass that radio communications system (SYS1) uses, scan first radio channel (DTC1) emitted radio signal that belongs to distribution.
4. claim 1 or 2 method is characterized in that receiving step c) may further comprise the steps:
F) provide information, first channel (DTC3) that distributes is described;
G) adjust radio receiver according to the descriptive information that provides, so that receive at least once identifying information (ID2) of emission.
5. a kind of changing method in the radio communications system (SYS1), comprise first base station (BS1), a travelling carriage (MS1) and second base station (HBS1), this method comprises that enforcement is according to any one detection method in the claim 1～3, determine that travelling carriage (MS1) is in the area of coverage (101) of second base station (HBS1), further comprising the steps of:
H) assert described travelling carriage (MS1) at the area of coverage (101) of second base station (HBS1) with after interior, judge whether (204) this travelling carriage (MS1) preferably should be with second base station (HBS1) rather than with one at least one travelling carriage of first base station (BS1) communication;
I) from first radio channel (DTC1) travelling carriage (MS1) is switched to second radio channel (DTC2), transmitting control information (906) and user data information (904) between second base station (HBS1) and travelling carriage (MS1) assert that subsequently travelling carriage (MS1) is included in the described group of travelling carriage.
6. a radio communications system (SYS1), comprise that whether first base station (BS1), travelling carriage (MS1) and a travelling carriage exist detector (HBS1), radio communications system wherein (SYS1) comprises distribution first radio channel (DTC1), be used for the device (MSC1, BS1, MS1) of transmitting control information (906) and user data information (904) between travelling carriage (MS1) and first base station (BS1), it is characterized in that:
Travelling carriage (MS1) comprises emitter (404,405,407), is used in the part (SACCH1) of first radio channel (DTC1) of emission control information (906) identifying information (ID1) of emission explanation travelling carriage (MS1) identity repeatedly;
Travelling carriage exists detector (HBS1) to comprise receiving system (507,511,512), is used to receive at least identifying information (ID1) of emission;
Radio communications system (SYS1) comprises register device (507), when receiving system (507,511,512) is received identifying information (ID1), be used for travelling carriage (MS1) register travelling carriage exist detector (HBS1) near.
7. the radio communications system of claim 6 (SYS1) is characterized in that described emitter (404,405,407) is used for slow associated control channel part (SACCH) the emission described identifying information (ID1) in first radio channel (DTC1).
8. claim 6 or 7 radio communications system (SYS1), it is characterized in that receiving system (507,511,512) is used for scanning the radio signal of first radio channel (DTC1) that belongs to distribution at least one subclass of the radio bands that radio communications system (SYS1) uses, so that at least once receive the identifying information (ID1) of emission.
9. claim 6 or 7 radio communications system (SYS2) is characterized in that:
Radio communications system (SYS2) is included as the device of the information of first radio channel (DEC3) whether travelling carriage exist detector (BS2) to furnish an explanation to distribute;
Receiving system comprises a radio receiver, is used for according to the descriptive information tuning radio receiver that provides, so that receive the identifying information (ID2) that is at least once launched.
10. the radio communications system of any one (SYS1) in the claim 6～8 is characterized in that this radio communications system (SYS1) comprising:
Second base station (HBS1), it comprises that there is detector in described travelling carriage;
When registering travelling carriage (MS1) near there is detector (HBS1) in travelling carriage, judge one device in one group of at least one travelling carriage whether (507) travelling carriage preferably should communicate by second base station (HBS1) rather than first base station (BS1);
Travelling carriage (MS1) is switched to second radio channel (DTC2), transmitting control information (906) and user data information (904) between second base station (HBS1) and travelling carriage (MS1) assert that then travelling carriage (MS1) is included in described group of travelling carriage with interior device (HBS1, MSC1, BS1, MS1).
11. the radio communications system of claim 10 (SYS1), it is characterized in that first base station (BS1) belongs to public cellular net (PLMN1), second base station (HBS1) is a base station from home (HBS1) that connects with public wired network (PSTN1), and described register device (507) and judgment means (507) are included in the base station from home (HBS1).
12. the radio communications system of claim 10 (SYS4), it is characterized in that first base station (BS1) belongs to public cellular net (PLMN1), second base station (OBS1) belongs to wireless office system (WOS1), and described register device and described judgment means are included in the wireless office system (WOS1).
13. be used to comprise the interior travelling carriage (MS1) of radio communications system (SYS1) of first base station (BS1), this travelling carriage (MS1) comprises emitter (404,405,407), be used to be distributed in first radio channel (DTC1) transmitting control information (906) and the user data information (904) that communicate between travelling carriage (MS1) and first base station (BS1), it is characterized in that emitter (405) is used for launching repeatedly in the part (SACCH1) of first wireless channel (DTC1) that is used for emission control information (906) information (ID1) of explanation travelling carriage (MS1) identity.
14. the travelling carriage of claim 13 (MS1) is characterized in that described emitter (404,405,407) is used for launching described identifying information (ID1) in the slow associated control channel part (SACCH1) of described first radio channel (DTC1).
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| SE9801271A SE514190C2 (en) | 1998-04-09 | 1998-04-09 | Procedure and arrangement of a communication system |
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- 1999-03-30 EP EP99925495A patent/EP1070435A1/en not_active Withdrawn
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Also Published As
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| EP1070435A1 (en) | 2001-01-24 |
| CN1203712C (en) | 2005-05-25 |
| AU4175899A (en) | 1999-11-01 |
| MY122199A (en) | 2006-03-31 |
| AR015755A1 (en) | 2001-05-16 |
| CA2327819A1 (en) | 1999-10-21 |
| IL138894A0 (en) | 2001-11-25 |
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| SE514190C2 (en) | 2001-01-22 |
| WO1999053712A1 (en) | 1999-10-21 |
| BR9909539A (en) | 2000-12-12 |
| US6381457B1 (en) | 2002-04-30 |
| SE9801271L (en) | 1999-10-10 |
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